CN114703741A - Superimposed truss type bridge span structure based on braided structure and installation method thereof - Google Patents
Superimposed truss type bridge span structure based on braided structure and installation method thereof Download PDFInfo
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- CN114703741A CN114703741A CN202210329434.0A CN202210329434A CN114703741A CN 114703741 A CN114703741 A CN 114703741A CN 202210329434 A CN202210329434 A CN 202210329434A CN 114703741 A CN114703741 A CN 114703741A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D6/00—Truss-type bridges
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Abstract
The invention provides a superposed truss type bridge span structure based on a braided structure and an installation method thereof, wherein the superposed truss type bridge span structure comprises two groups of bridge span structures, the adjacent side edge parts of the bridge span structures are respectively provided with a track assembly, and a tension-compression energy-dissipation damper is connected between the track assemblies and can ensure that the swinging between the two bridge span structures tends to be consistent, so that the integral stability of the structure is improved; weave the level of subassembly and be connected with rotating assembly and track subassembly respectively to spoke both ends, rotating assembly rotatable coupling level is to the one end of spoke, the level swings according to predetermineeing the track in the track subassembly to the other end of spoke, the additional slider in the middle of the elastomeric element extrusion of track subassembly's fixed block both sides, upper strata decking and lower floor's decking consume energy to the power of luffing motion, increased the level to the spoke round connecting axle pivoted frequency, through the increase level to spoke and vertical frequency to the spoke friction increase power consumption ability, the whole earthquake power consumption ability and the intensity of span structure have been improved.
Description
Technical Field
The invention belongs to the technical field of bridge damping engineering, and particularly relates to a braided structure-based superposed truss type bridge span structure and an installation method thereof.
Background
Wind load has a great influence on a large-span bridge, and the wind load can cause the bridge to generate adverse phenomena such as vortex vibration and the like under specific frequency. The anti-seismic and anti-wind related research of the large-span bridge structure has been carried out for many years, and at present, in order to solve the anti-seismic and anti-wind problems of the large-span bridge, the structure arrangement is mainly carried out by adopting an integral flexible structure such as a suspension bridge structure, and the influence of earthquake or wind load on the structure is eliminated by utilizing the characteristic that the bridge can elastically deform. But some bridge projects can not adopt a flexible bridge span structure to resist earthquake or wind load due to the condition limitations of engineering geology, climate temperature, site conditions and the like, and at the moment, a bridge span structure with higher strength and still higher damping and energy consumption capacity is adopted for arrangement, so that the safety of the bridge span structure can be ensured while the site condition arrangement is met.
Bridge structures have been studied for many years for earthquake and wind resistance, but the structural forms of bridge span structures are still few. The existing large-span bridge span structure has extremely large self weight, the large-mass bridge span structure is favorable for resisting the influence of wind load on a bridge, but the bridge span structure cannot reduce the consumption of concrete and steel while having a strong damping function, and cannot reduce the thickness of the bridge with a large windward area.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a superposed truss type bridge span structure based on a braided structure and an installation method thereof, which can ensure that the bridge span structure has a strong shock absorption function, reduce the consumption of concrete and steel and reduce the thickness of a bridge with a large windward area.
The invention is realized by the following technical scheme:
a superimposed truss type bridge span structure based on a woven structure is characterized by comprising two groups of bridge span structures; the bridge span structures comprise upper bridge decks and lower bridge decks which are arranged in parallel at intervals; steel trusses and weaving assemblies are fixedly connected between the two side edges of the upper bridge deck and the lower bridge deck;
the weaving assembly comprises a plurality of horizontal spokes and vertical spokes, and the horizontal spokes and the vertical spokes are staggered with each other to form a weaving structure; the two ends of the vertical spokes are fixedly connected with an upper bridge deck and a lower bridge deck respectively, one ends of the horizontal spokes are connected with the rotating assembly, and the other ends of the horizontal spokes are connected with the track assembly;
the rotating assembly comprises two fixed plates fixedly arranged between an upper bridge deck plate and a lower bridge deck plate, a plurality of connecting shafts are fixedly arranged between the two fixed plates, and a plurality of connecting shaft bodies are rotatably connected with a plurality of first rotating sleeves;
the track assembly comprises a curved slideway and a plurality of fixed blocks arranged on the curved slideway in a sliding manner, two ends of the curved slideway are fixedly connected to an upper-layer bridge deck and a lower-layer bridge deck, additional sliders are arranged between every two adjacent fixed blocks, elastic parts are arranged on the outer walls of the fixed blocks close to and far away from the additional sliders, and the fixed blocks correspond to the first rotating sleeves one by one and are fixedly connected with horizontal spokes;
the track assemblies of the two sets of bridge span structures are arranged adjacently, and a plurality of tension-compression energy-dissipation dampers are connected between the two track assemblies.
Furthermore, two ends of the vertical spokes in the weaving structure are fixedly arranged on the upper bridge deck and the lower bridge deck at intervals in sequence;
the horizontal spokes are S-shaped and sequentially wound on the plurality of vertical spokes.
Furthermore, two ends of the vertical spoke are provided with a fixer;
the fixer includes the welt, the welt sets firmly respectively on upper deck decking and lower floor's decking.
Furthermore, the horizontal spokes and the vertical spokes are made of alloy materials and sleeved with high-friction rubber materials.
Furthermore, the fixed blocks and the horizontal spokes are equal in number.
Furthermore, third clamping plates are fixedly arranged on the plurality of first rotating sleeves;
the third clamping plate is connected with the end part of the horizontal spoke.
Further, the outer wall of the fixed block of the adjacent track assembly is provided with a serial rod piece;
the two ends of each of the tension-compression energy-consumption dampers are provided with a connecting rod, the free ends of the connecting rods are provided with second rotating sleeves, and the second rotating sleeves are rotatably sleeved on the rod bodies of the series connection rod pieces.
Furthermore, the tension-compression energy-consumption damper adopts a self-resetting tension-compression energy-consumption damper.
A method for installing a superposed truss type bridge span structure based on a woven structure comprises the following steps:
s1: arranging a lower deck bridge deck at a preset position, and hinging the lower deck bridge deck with pier structures or bearing platform structures at two ends;
s2: a temporary support is arranged above the lower bridge deck plate and used for temporarily supporting and connecting the upper bridge deck plate;
s3: vertical spokes are fixedly arranged between the upper bridge deck and the lower bridge deck, and horizontal spokes are wound between the vertical spokes to form a weaving assembly;
two fixing plates are fixedly and vertically arranged between an upper bridge deck plate and a lower bridge deck plate at the far ends of the two sets of bridge span structures, a plurality of connecting shafts are horizontally arranged between the fixing plates, and a plurality of connecting shaft bodies are rotatably connected with a plurality of first rotating sleeves to form a rotating assembly;
a bent slideway is fixedly and vertically arranged between an upper bridge deck and a lower bridge deck which are respectively arranged at the close ends of the two groups of bridge span structures, a plurality of fixed blocks are arranged on the bent slideway in a sliding manner, and additional sliding blocks are arranged between every two adjacent fixed blocks to form a track assembly;
two ends of the horizontal spoke are respectively connected with the first rotating sleeve and the fixed block;
s4: arranging tension-compression energy dissipation dampers on the adjacent track assemblies;
s5: and (4) dismantling the temporary support, and fixedly connecting the upper bridge deck and the lower bridge deck by adopting a steel truss.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a superposed truss type bridge span structure based on a braided structure and an installation method thereof, and the superposed truss type bridge span structure comprises two groups of bridge span structures, wherein the adjacent side edge parts of the bridge span structures are provided with track components, and a plurality of tension-compression energy dissipation dampers are connected between the two track components, and the tension-compression energy dissipation dampers can enable the swinging between the two bridge span structures to tend to be consistent, so that the integral stability of the structure is improved; the steel truss is used for supporting the upper bridge deck and the lower bridge deck, the weaving assembly comprises horizontal spokes and vertical spokes which are mutually staggered and woven, the vertical spokes are fixedly arranged on the upper bridge deck and the lower bridge deck, two ends of each horizontal spoke are respectively connected with the rotating assembly and the track assembly, when the bridge span structure is acted by earthquake, the horizontal spokes can swing up and down, and friction is generated between the horizontal spokes and the vertical spokes in the trend, so that energy consumption is realized; a rotatable first rotating sleeve is arranged on a connecting shaft of the rotating assembly and fixedly connected with one end of the horizontal spoke, so that the weaving assembly can swing up and down around the connecting shaft within a certain range; meanwhile, the other end of the horizontal spoke swings in the track assembly according to a preset track, wherein, the bent slideway can ensure that the horizontal spoke with constant length swings, ensure that the two ends of the horizontal spoke do not tend to stretch in the swinging process, ensure the elastic parts at the two sides of the fixed block to extrude the additional slide block in the middle, the upper bridge deck and the lower bridge deck to consume energy in the sliding process, wherein the additional slide block is used for providing support for the elastic parts between the adjacent fixed blocks, the extrusion between the elastic parts increases the frequency of the horizontal spokes rotating around the connecting shaft, and then increase the power consumption ability of this application bridge span structure through increasing the level to spoke and vertical to the frequency that the spoke takes place the friction, improved the whole earthquake power consumption ability and the intensity of bridge span structure.
Furthermore, horizontal spokes in the woven structure are sequentially wound on a plurality of vertical spokes in an S shape, and the woven structure is convenient for friction energy consumption; and the horizontal spokes and the vertical spokes are made of alloy materials and sleeved with high-friction rubber materials, so that the high-friction rubber material has the characteristics of high elasticity, high strength and easiness in processing, is favorable for energy consumption and manufacturing of a weaving assembly, and is convenient for long-term friction energy consumption.
Drawings
FIG. 1 is a schematic diagram of a half-section of a composite truss type bridge span structure based on a braided structure according to an embodiment of the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is another side view of FIG. 1;
FIG. 4 is a schematic view of a connection structure of a braiding assembly according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a construction process of a laminated truss type bridge span based on a braided structure according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of the partial spatial positions of the track assembly and the tension and compression energy-consuming damper in the bridge span structure according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a track assembly in accordance with an embodiment of the present invention;
FIG. 8 is a schematic view of a first fastener in accordance with an embodiment of the present invention;
FIG. 9 is a schematic diagram of a rotating assembly according to an embodiment of the present invention;
FIG. 10 is a schematic view showing the spatial positions of the nodes interlaced with each other by the horizontal spokes and the vertical spokes according to the embodiment of the present invention.
In the figure: the upper deck slab 1, the lower deck slab 2, the steel truss 3, weave the subassembly 5, horizontal spoke 51, vertical spoke 52, rotating assembly 4, track subassembly 6, fixed plate 41, connecting axle 43, first rotatory sleeve 513, crooked slide 64, fixed block 61, additional slider 63, elastomeric element 62, fixer 53, welt 531, first splint 511, first screw 512, second screw 533, third screw 515, second splint 532, third splint 514, draw and press energy dissipation damper 7, connecting rod 72, second rotatory sleeve 73, series connection member 65, crooked welt 641, crooked slide rail 642.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention provides a superposed truss type bridge span structure based on a woven structure, which comprises an upper bridge deck 1 and a lower bridge deck 2 which are arranged in parallel at intervals, as shown in figures 1, 2, 3 and 5, wherein the upper bridge deck 1 and the lower bridge deck 2 can be reinforced concrete bridge decks or steel bridge decks;
a steel truss 3 and a weaving assembly 5 are fixedly connected between the two side edges of the upper deck slab 1 and the lower deck slab 2, and specifically, the steel truss 3 forms a structural support for the upper deck slab 1 and the lower deck slab 2; further, the weaving assembly 5 is positioned on the inner side of the steel truss 3;
the braiding assembly 5 comprises a plurality of horizontal spokes 51 and vertical spokes 52, and the horizontal spokes 51 and the vertical spokes 52 are staggered with each other to form a braided structure; the two ends of the vertical spokes 52 are respectively fixedly connected with the upper bridge deck 1 and the lower bridge deck 2, one end of each horizontal spoke 51 is connected with the rotating assembly 4, and the other end of each horizontal spoke is connected with the track assembly 6;
as shown in fig. 9, the rotating assembly 4 includes two fixing plates 41 fixed between the upper deck slab 1 and the lower deck slab 2, a plurality of connecting shafts 43 are fixed between the two fixing plates 41, and a plurality of first rotating sleeves 513 are rotatably connected to each of the plurality of connecting shafts 43;
as shown in fig. 7, the rail assembly 6 includes a curved slideway 64 and a plurality of fixing blocks 61 slidably disposed on the curved slideway 64, two ends of the curved slideway 64 are fixedly connected to the upper deck slab 1 and the lower deck slab 2, an additional slider 63 is disposed between adjacent fixing blocks 61, elastic members 62 are disposed on outer walls of the fixing blocks 61 close to and far from the additional slider 63, specifically, an axial direction of the elastic members 62 is tangential to a central curve of the curved slideway 64, and the elastic members 62 may be springs or dampers;
the fixed blocks 61 and the first rotating sleeves 513 correspond to each other one by one and are fixedly connected with two ends of the horizontal spokes 51 respectively; specifically, the rotating assembly 4 is rotatably connected with one end of the horizontal spoke 51, so that the braiding assembly 5 can swing up and down within a certain range, meanwhile, the other end of the horizontal spoke 51 swings in the track assembly 6 according to a preset track, the elastic parts 62 on two sides of the fixed block 61 of the track assembly 6 extrude the additional slider 63 in the middle, the upper bridge deck 1 and the lower bridge deck 2 to increase the frequency of the horizontal spoke 51 rotating around the connecting shaft 43, and further the energy consumption capacity of the bridge span structure is increased by increasing the frequency of friction between the horizontal spoke 51 and the vertical spoke 52; further, a first clamping plate 511 is arranged on the fixing block 61, and the first clamping plate 511 is rotatably connected with one end of the horizontal spoke 51 through a first screw 512;
specifically, the fixed block 61 and the additional sliding block 63 should have a certain mass, and the fixed block and the additional sliding block can drive the horizontal spokes 51 to generate maximum angular displacement around the connecting shaft 43 by using a larger inertia principle when the bridge span structure of the present application encounters earthquake or wind load.
Furthermore, the curved sliding track 64 includes a curved lining board 641 and a curved sliding rail 642, an enlarged head is disposed at an end of the curved sliding rail 642, which is away from the curved lining board 641, an additional slider 63 and a fixed block 61 are disposed on the curved sliding rail 642, the additional slider 63 and the fixed block 61 can slide on the curved sliding rail 642, and the curved lining board 641 prevents the additional slider 63 and the fixed block 61 from rotating on the curved sliding rail 642.
As shown in fig. 5 and 6, in the two bridge span structures, the track assemblies 6 are arranged adjacently, and a plurality of tension-compression energy-consumption dampers 7 are connected between the two track assemblies 6.
Further, a series rod 65 is arranged on the outer wall of the fixing block 61 of the adjacent track assembly 6;
the two ends of the tension-compression energy-consumption dampers 7 are provided with connecting rods 72, the connecting rods 72 are provided with second rotating sleeves 73 from the free ends, and the second rotating sleeves 73 are rotatably sleeved on the rod bodies of the series connection rod members 65.
Specifically, the tension-compression energy-consumption damper 7 is a self-resetting tension-compression energy-consumption damper; specifically, in the process that the fixed block 61 slides up and down repeatedly on the curved slideway 64 for multiple times, the tension-compression energy-consumption damper 7 can also dissipate seismic energy, and after the earthquake or wind load action is finished, the tension-compression energy-consumption damper 7 can drive the bridge span structure to recover the structural state, so that the self-resetting capability of the horizontal spokes 51 is given; further, the tension-compression energy-consumption damper 7 can be an SMA wire damper or the like.
Specifically, the tension-compression energy-consumption damper 7 has the effects that the track assemblies 6 in the two bridge span structures are connected firstly, when the fixed block 61 slides repeatedly on the curved slideway 64, the tension-compression energy-consumption damper 7 can dissipate tension-compression energy, specifically, the distances between each point on the curved slideway 64 and the connecting shaft 42 are equal, and repeated swinging of the horizontal spokes 51 is facilitated for many times. In addition, the tension-compression energy-consumption damper 7 can adjust the position of the horizontal spoke 51 by adjusting the initial and final positions of the fixing block 61, so that the horizontal spoke 51 in the bridge span structure can be kept horizontal at the initial and final positions, and the bridge span structure can be conveniently restored to the structural state.
As shown in fig. 4 and 10, in the braided structure, two ends of a vertical spoke 52 are fixedly arranged on an upper bridge deck 1 and a lower bridge deck 2, and are sequentially arranged at intervals;
the horizontal spokes 51 are sequentially wound on the plurality of vertical spokes 52 in an S shape;
specifically, the extending directions of the horizontal spoke 51 and the vertical spoke 52 in the initial state are perpendicular to each other; furthermore, the horizontal spokes 51 and the vertical spokes 52 are made of alloy materials and sleeved with high-friction rubber materials, and chamfers are needed during manufacturing, so that stress concentration is reduced as much as possible. In addition, a method of arranging dense ribs or rivets on the outer side of the alloy material to penetrate through the alloy material and the high-friction rubber material is adopted between the alloy material and the high-friction rubber material, so that slippage between the alloy material and the high-friction rubber material is reduced as much as possible; the alloy material jacket high friction rubber material has the characteristics of high elasticity, high strength and easy processing, and is beneficial to energy consumption and manufacture of the weaving assembly 5; in addition, although both the horizontal spokes 51 and the vertical spokes 52 have great friction force, a person skilled in the art should combine the physical and mechanical properties of the high-friction rubber material and the structural features of the braiding assembly 5 to ensure that the horizontal spokes 51 can smoothly swing in the braiding assembly 5. As long as horizontal spoke 51 can take place many times simple pendulum motion repeatedly, combine the high friction characteristic of horizontal spoke 51 and vertical spoke 52, just can guarantee to weave subassembly 5 wholly and provide high power consumption ability for this application bridge structure.
Another preferred example of the present invention is that, as shown in fig. 8, the vertical spokes 52 are provided with retainers 53 at both ends; the fixer 53 comprises a lining plate 531 and two second clamping plates 532 vertically arranged on the lining plate 531 at intervals, and the ends of the vertical spokes 52 are arranged between the two second clamping plates 532 and fixed by penetrating through second screws 533;
the lining plates 531 are respectively and fixedly arranged on the upper bridge deck 1 and the lower bridge deck 2.
Specifically, if upper deck slab 1 and lower floor's deck slab 2 adopt reinforced concrete bridge panel, then the shaping is pour to fixer 53 adopts the built-in fitting form, if upper deck slab 1 and lower floor's deck slab 2 adopt steel bridge panel, then welt 531 and upper deck slab 1 and lower floor's deck slab 2 adopt welded connection.
Furthermore, the fixed blocks 61 and the horizontal spokes 51 are equal in number, so that the rotating assembly 4 and the track assembly 6 can dissipate energy for the weaving assembly 5 in a targeted manner.
Further, a third clamping plate 514 is fixedly arranged on each of the first rotating sleeves 513;
the third clamping plate 514 is fixedly connected with the end of the horizontal spoke 51 through a third screw 515.
The invention provides a method for installing a superposed truss type bridge span structure based on a braided structure, which comprises the following steps:
s1: arranging the lower deck bridge deck 2 at a preset position, and hinging the lower deck bridge deck with pier structures or bearing platform structures at two ends;
s2: a temporary support is arranged above the lower deck slab 2 and is used for temporarily supporting and connecting the upper deck slab 1;
s3: vertical spokes 52 are fixedly arranged between the upper bridge deck 1 and the lower bridge deck 2, and horizontal spokes 51 are arranged between the vertical spokes 52 in an S-shaped penetrating manner to form a weaving assembly 5;
two fixing plates 41 are vertically fixed between the upper bridge deck plate 1 and the lower bridge deck plate 2 at the far ends of the two sets of bridge span structures, a plurality of connecting shafts 43 are horizontally arranged between the fixing plates 41, and the bodies of the connecting shafts 43 are respectively and rotatably connected with a plurality of first rotating sleeves 513 to form a rotating assembly 4;
a bent slideway 64 is fixedly and vertically arranged between the upper bridge deck 1 and the lower bridge deck 2 which are respectively arranged at the close ends of the two sets of bridge span structures, a plurality of fixed blocks 61 are arranged on the bent slideway 64 in a sliding way, and additional sliding blocks 63 are arranged between the adjacent fixed blocks 61 to form a track assembly 6;
the two ends of the horizontal spoke 51 are respectively connected with the first rotating sleeve 513 and the fixed block 61;
s4: tension and compression energy dissipation dampers 7 are arranged on the adjacent track assemblies 6;
s5: and (4) dismantling the temporary support, and fixedly connecting the upper bridge deck 1 with the lower bridge deck 2 by adopting a steel truss 3.
Specifically, when the bridge span structure is installed, the pier structure arranged at the lower part of the end, close to the track assembly 6, of the bridge span structure has larger elastic deformation capacity and shock resistance than the pier structure arranged below the end, close to the rotating assembly 4, of the bridge span structure, and the bridge span structure is determined based on repeated swinging of the horizontal spokes 51. Simultaneously, this application bridge structure both ends all should adopt articulated the arranging with pier structure or cushion cap structure, do benefit to this application bridge structure's antidetonation.
Specifically, the bridge span structure sets up the pier structure that has bigger elasticity power consumption ability in the below of two sections adjacent one ends of track subassembly 6, and when this application pier structure met earthquake or wind load effect, upper bridge face plate 1 and lower floor's bridge face plate 2 were owing to by two rows of steel truss 3 fixed connection, so this application bridge span can be under the prerequisite of keeping great wholeness taking place bigger upper and lower vibrations near track subassembly 6's one end. In the process, the horizontal spoke 51 swings around the fixed connecting shaft 42, and since the other end of the horizontal spoke 51 is fixed by the fixing block 61 with large inertia, and the fixing block 61 can slide repeatedly on the curved slideway 64 through the elastic part 62, the horizontal spoke 51 can be driven to swing repeatedly and repeatedly.
In addition, the horizontal spokes 51 and the vertical spokes 52 in the braiding group 5 formed by the horizontal spokes 51 and the vertical spokes 52 can be pressed and rubbed with each other, so that the friction coefficient between the horizontal spokes 51 and the vertical spokes 52 is easily increased, and the braiding group 5 has larger friction energy consumption capacity. In addition, in the process that the fixed block 61 slides up and down repeatedly on the curved slideway 64, the tension-compression energy-consumption damper 7 can dissipate seismic energy, and after the earthquake or wind load action is finished, the tension-compression energy-consumption damper 7 can drive the bridge span structure to recover the structural state, so that the self-resetting capability of the horizontal spokes 51 is given.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A superimposed truss type bridge span structure based on a woven structure is characterized by comprising two groups of bridge span structures; the bridge span structures comprise upper bridge decks (1) and lower bridge decks (2) which are arranged in parallel at intervals; a steel truss (3) and a weaving assembly (5) are fixedly connected between the two side edges of the upper bridge deck (1) and the lower bridge deck (2);
the braiding assembly (5) comprises a plurality of horizontal spokes (51) and vertical spokes (52), and the horizontal spokes (51) and the vertical spokes (52) are staggered with each other to form a braided structure; the two ends of the vertical spokes (52) are fixedly connected with an upper bridge deck (1) and a lower bridge deck (2) respectively, one end of each horizontal spoke (51) is connected with the rotating assembly (4), and the other end of each horizontal spoke is connected with the track assembly (6);
the rotating assembly (4) comprises two fixing plates (41) fixedly arranged between the upper bridge deck (1) and the lower bridge deck (2), a plurality of connecting shafts (43) are fixedly arranged between the two fixing plates (41), and a plurality of first rotating sleeves (513) are rotatably connected to the shafts of the connecting shafts (43);
the track assembly (6) comprises a curved slideway (64) and a plurality of fixed blocks (61) which are arranged on the curved slideway (64) in a sliding manner, two ends of the curved slideway (64) are fixedly connected to an upper-layer bridge deck (1) and a lower-layer bridge deck (2), an additional sliding block (63) is arranged between every two adjacent fixed blocks (61), elastic parts (62) are arranged on the outer walls, close to and far away from the additional sliding block (63), of the fixed blocks (61), and the fixed blocks (61) correspond to the first rotating sleeves (513) one by one and are fixedly connected with horizontal spokes (51);
the two sets of track assemblies (6) of the bridge span structure are arranged adjacently, and a plurality of tension-compression energy-consumption dampers (7) are connected between the two track assemblies (6).
2. The laminated truss type bridge span structure based on the braided structure as claimed in claim 1, wherein the two ends of the vertical spokes (52) in the braided structure are fixedly arranged on the upper bridge deck (1) and the lower bridge deck (2) at intervals in sequence;
the horizontal spokes (51) are sequentially wound on the plurality of vertical spokes (52) in an S shape.
3. A laminated truss type bridge span structure based on braided structure as claimed in claim 1, wherein both ends of the vertical spokes (52) are provided with a fixer (53);
the fixer (53) comprises a lining plate (531), and the lining plate (531) is fixedly arranged on the upper bridge deck (1) and the lower bridge deck (2) respectively.
4. A laminated truss type bridge span structure based on braided structure as claimed in claim 1, wherein the horizontal spokes (51) and the vertical spokes (52) are made of alloy material and coated with high friction rubber material.
5. A laminated truss type bridge span structure based on braided structure as claimed in claim 1, wherein the number of fixing blocks (61) and horizontal spokes (51) is equal.
6. A laminated truss type bridge span structure based on braided structure as claimed in claim 1, wherein each of the first plurality of rotating sleeves (513) is provided with a third clamping plate (514);
the third clamping plate (514) is connected with the end part of the horizontal spoke (51).
7. A laminated truss type bridge span structure based on a braided structure as claimed in claim 1, wherein the outer wall of the fixing block (61) of the adjacently arranged rail assembly (6) is provided with a series connection rod member (65);
the two ends of the tension-compression energy-consumption dampers (7) are provided with connecting rods (72), the free ends of the connecting rods (72) are provided with second rotating sleeves (73), and the second rotating sleeves (73) are rotatably sleeved on the rod bodies of the series connection rod pieces (65).
8. A laminated truss type bridge span structure based on braided structure as claimed in claim 1, wherein said tension-compression energy-consuming damper (7) is a self-resetting tension-compression energy-consuming damper.
9. A method for installing a laminated truss type bridge span structure based on a woven structure, which is based on any one of the laminated truss type bridge span structures based on the woven structure of claims 1-8, and comprises the following steps:
s1: arranging the lower deck bridge deck (2) at a preset position and hinging the lower deck bridge deck with pier structures or bearing platform structures at two ends;
s2: a temporary support is arranged above the lower bridge deck (2) and used for temporarily supporting and connecting the upper bridge deck (1);
s3: vertical spokes (52) are fixedly arranged between the upper bridge deck (1) and the lower bridge deck (2), and horizontal spokes (51) penetrate through the vertical spokes (52) in an S shape to form a weaving assembly (5);
two fixing plates (41) are fixedly and vertically arranged between an upper bridge deck plate (1) and a lower bridge deck plate (2) at the far ends of two groups of bridge span structures, a plurality of connecting shafts (43) are horizontally arranged between the fixing plates (41), and the shafts of the connecting shafts (43) are rotatably connected with a plurality of first rotating sleeves (513) to form a rotating assembly (4);
a bent slideway (64) is fixedly and vertically arranged between an upper bridge deck (1) and a lower bridge deck (2) which are respectively arranged at the close ends of the two groups of bridge span structures, a plurality of fixed blocks (61) are arranged on the bent slideway (64) in a sliding manner, and additional sliding blocks (63) are arranged between every two adjacent fixed blocks (61) to form a track assembly (6);
two ends of the horizontal spoke (51) are respectively connected with a first rotating sleeve (513) and a fixed block (61);
s4: tension and compression energy dissipation dampers (7) are arranged on the adjacent track assemblies (6);
s5: and (3) removing the temporary support, and fixedly connecting the upper bridge deck (1) with the lower bridge deck (2) by adopting a steel truss (3).
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| JP2003193430A (en) * | 2001-12-28 | 2003-07-09 | Kajima Corp | Construction method of composite truss bridge |
| JP2004027516A (en) * | 2002-06-21 | 2004-01-29 | Oriental Construction Co Ltd | Composite truss segment and truss bridge for simultaneously using suspension cable by using this truss segment and its construction method |
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| CN114703741B (en) | 2023-09-19 |
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